Tension device



W. CANOVA.

TENSION DEVICE.

APPLlcMloN FILED man, 1922.

1,414,175. Patented 111.25, 1922.

wf/won, wrm/Ess W'hcvm Canova,

. ATTORNEY narran stares ,PATENT lfS-orsics;

WILLIAM oANovAor matrassen, NEW JRsEY, Y'

TENSION nEvrcE. l

. To all 1li/0m t may concern.'

Be it known that I, vWILLIAMy (Innova, a citizen of the United States, residing at Paterson, in the county of Passaicand State of New Jersey, have invented certain new and useful Improvements in'Tension Devices, of which the following is a specification. v Y Y,

Shuttle tension devices of the-class in which a thread-controlling member. moves pivotally back `and forth to bring itsthreadV guides into and out. of alternating relation to a series of'fiXed thread guides in the shuttlev have heretofore usually had these thread-,controlling members made either of suitably bent wire or stamped out of sheet metal. The latter vform is the more preferable for several reasons, among which is that it makes possible the use of separately formed guides and consequently the sub-l stitution of new guides for worn ones.

My present invention relates to the sec-V ond class of such thread-'controlling memshown in Fig. 1.v Y y a designates the usual series of fixed bers, and it hasffor its object to form the body portionoi:l the member and partsV to constitute loops upstanding therefrom and serving either as', or to receive eyelets to form, guides all from a single blank of sheet metal.

In the accompanying drawing, Fig. 1 is a side elevation ofY a fragment of a shuttle containing a. tension means of the class specified having the improved pivoted' thread-controlling member, the shuttle appearing partially in section; 'K

Fig. 2 shows the blank from which said member is formed, and, in Adotted outline, the piece of sheet metal out of which it is stamped; 1

Fig. 3 is an enlarged sectional view the line 3--3 of Fig. left; and v Fig. 4C isa sectional view through one of the loops Vand an eyelet held thereby as thread guides in a shuttlev b, c being the I thread which extends through a gnide CZ from Vthe quill cavity@ to the cavity f containing the tension means andcthenfrom said cavity flaterally of the shuttle in the usual way.

From a suitable blank g of sheet metal shown by the dotted outline in Figure 2 a blank is cut out. This blank consists of an elongated body portion z which is slender 1, looking toward the throughout its lengthexcepting at z', where vit is widened, theportion z'V being nearer one Specicationrof Letters Patent. i Pgggnted APL `25, 17922 Application inea February 1', 1922. fseriai No; '533;815 Y. Y

z' has at regular intervals longslender arms j projecting therefrom Aand at theiother I edge and in registry with saidarins notches" c formed therein. rIhe part" it? projecting. from sai'dportion z' has a hole kZ formedin the extremity'thereof; Y'

vkHaving formed` thisy blank'it is shapedv v' as follows? The portion z' isbent on'gatu` transverse axis into substantially cylindrical i form t'oV produce th'ebearing m, Figl, leaving the longer part`71/ true toits original plane, and theV shorterfpart lizis' bent downwardly so as to fsta'ndat more or less of an angle to the part h. `Each arm y' is bent inwardly over and close to the lpart L, as aty j (Fig. 3) and then upwardly over, down-- wardly and inwardly to form a substantially circularloop y2; and then has its freei end portion' bent outwardly and inwardly `to form, a hook or clip; j? which isadaptedto 'engagejin the correspondingnotch f:l of the son."

part it. The metal 4is tempered, preferably, I soas to have a certain amount of elasticity, v

i. e., suflicient to return the hook j3 into the notch if it is sprung a trifle out of the. same.

The devicev thus formed is adapted tobe i pivoted on4 theY usual pivoting' pin fn, provided for the pivoted thread-controlling member of a shuttle tension device of the v'class indicated, its portion m forming the bearing, and it is also adapted to have engaged `with the arm formed by its part h2, to wit, in thehole Z of saidpart, the usual elastic device o'for normallyV holding the member in. the position shown in `Figure 1.V

The naked'loops i2 mayv form'the thread Y guides of themember; Vor I may equip said member with a series of porcelain or Vmetal eyelets 'p of well-known form which the loops jz' peripherally embrace, these, eyelets having peripheral grooves 79 in whichV the `loops engage. Where such eyelets or vother removable guides are used they may be readily replaced when worn by springing `the hooks js outof the notches suiiiciently to.

expandthe loops i2 and, release the eyelets.` Having thusfully describedmy invention, what I claim as newsand desire to secure by Letters Patent is: Y 'l l. A threadscontrollingmember for a tenlsion device of the class vspeciied.consisting of an elongated piece of stiff material having a series of integral arms arranged one al- Y 2. A'thread-controlling member lor a ten'-y sion device of vthe class speeied consisting of an elongated piece of stiff material having a series of integral arms arranged one after another along the same and eaeh extending from one side of the piece and being bent into a loop upstanding from the piece and havingits 'free end hookshaped and receiving the other side of the piece.

8.V A thread-'controlling member 'for a tension device oit the class speeiied consisting ol an elongated piece of stiff materialhaving a series of integral arms arranged one after 'another along the sarneand eaehextending from one side of the. pieceand being bent into a loop npstanding` `from the piece and having its free end engaging the other Side ol" the piece, said other side having a notch to receive the `free end of sneh arm.A

4. A threadeontrolling nieniber for a tension device of the class specilied consisting of an elongated piece of stift' material havingja series of integral arms arranged one after another along the same and each extending;y vfrom one side'only of the piece and being" bent into a loop upstanding from the p1ece,'j

series o'f integral arms arranged oneyafteranother along the same and each extending from one side only of the piece and being bent into a loopupstandlng 'from' the piece.

6. A thread-controlling member for a tenf slondevice 01"' the Class described consisting of a sheet-metal blankhaving anrelongated body part and integral ,arms projecting laterally from one side of said body part, each arm of the blank being bent up Vand over the ybody Vpart into the form of a thread-gnid# ing' loop. Y. Y Y

In testimony whereof I affix my signature.-

WILLIAM Canova.' j 

